yes.blog/Yes.Application/Core/HostedServices/HangfireJobRegistrationService.cs

namespace Yes.Application.Core.HostedServices
{
    public class HangfireJobRegistrationService : BackgroundService
    {
        private readonly IServiceProvider _serviceProvider;
        private readonly BlogSettings _settings;

        public HangfireJobRegistrationService(
            IServiceProvider serviceProvider,
            IOptionsMonitor<BlogSettings> options)
        {
            _serviceProvider = serviceProvider;
            _settings = options.CurrentValue;
        }

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            using var scope = _serviceProvider.CreateScope();
            var recurringJobManager = scope.ServiceProvider.GetRequiredService<IRecurringJobManager>();

            var intervalHours = _settings.RssGenerationIntervalHours;

            //recurringJobManager.AddOrUpdate<RssGenerationJob>(
            //    nameof(RssGenerationJob),
            //    x => x.Execute(),
            //    Cron.Hourly(intervalHours)
            //);

            recurringJobManager.AddOrUpdate<RssGenerationJob>(
                nameof(RssGenerationJob),
                x => x.Execute(),
                Cron.Minutely
            );
        }
    }
}